Poor mans Financial Calculator 1.1

Poor mans Financial Calculator project is a small financial and basic mathematical operations calculator applet.
The calculator registers work like the mythical HP-12C financial calculator, even the "n" rounding behaviour. The yellow fields also serve as operands for the arithmetic operations; for such ops, the blue field will show the result.
BEGIN button: If enabled, means that the first payment is made at the beginning of the period (important only for financial operations that involve PMT register)
FPC button: if enabled, Fractionary part of the Period ("n") will also be calculated using Compound interest; if disabled, fractionary part will use simple (linear) interest, which gives slightly higher interest values.
Enhancements:
- This release translates the code and messages to English and changes the license to the LGPL.